Home / 159,010.19-219,421.20-91,011.70

Finding the Fourth Proportional to 159,010.19, 219,421.20 and 91,011.70

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Solution

The fourth proportional to 159,010.19, 219,421.20 and 91,011.70 is: 125,588.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,010.19 : 219,421.20 = 91,011.70 : x
  2. Step 2: Convert to fraction form
    159,010.19/219,421.20 = 91,011.70/x
  3. Step 3: Cross multiply
    159,010.19x = 219,421.20 × 91,011.70
  4. Step 4: Simplify right side
    159,010.19x = 19,969,896,428.04
  5. Step 5: Solve for x
    x = 19,969,896,428.04/159,010.19
  6. Step 6: Final answer
    x = 125,588.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.